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Preemergence Herbicide Application Timings: Pros and Cons

April 9, 2020

Preemergence herbicides are the foundation of herbicide-based weed management systems, and effective use of these products is essential to protect crop yields and reduce selection pressure for herbicide resistant weeds. In a perfect world, applying preemergence herbicides immediately after planting would provide the greatest likelihood of maximum performance, but equipment and labor availability limit many farms from using this approach. This article will provide a brief overview of the pros and cons of different application strategies.

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Managing Residual Herbicides with Cover Crops

February 25, 2020
early and late termination comparison

A common question when incorporating cover crops into a production system is, will the cover crop interfere with the performance of residual herbicides included with the burndown treatment? This article will discuss the fate of residual herbicides applied to crop residue and living cover crops, and how this may influence herbicide effectiveness.

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Effect of residual herbicides on cover crop establishment

Encyclopedia Article

The use of preemergence herbicides has increased in recent years due to the spread of herbicide resistant weeds. Many of these products are persistent in the environment, and phytotoxic concentrations may remain in the soil at the time of cover crop establishment in the fall. While herbicide labels provide information on restrictions regarding rotational crops, these recommendations generally are not written with cover crops in mind.

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